* {
    margin: 0;
    padding: 0;
}
body{
    background-color: #000;
}
ul{
    list-style: none;
}
.box {
    width: 1200px;
    margin: 0 auto;
    margin-top: 20px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid #ccc;
}
#myDropdown{
    display: flex;
    justify-content: space-around;
}
.box i{
    display: block;
    width: 32px;
    height: 32px;
    margin: 5px auto;
}
.box li a{
    display: inline-block;
    text-align: center;
    padding-top: 7px;
    color: #333;
    text-decoration:none;
}
.btn{
    color: #e5e5e5;
    
}
.btn:link {color: rgb(226, 208, 208)} /* 未被访问的链接  */
.btn:visited {color: #999;} /* 已被访问过的链接 */
.btn:hover {
    color: #e5e5e5;
    background-color: #9a9b9e;
} /* 鼠标悬浮在上的链接  */
.btn:active {color: #fff;} /* 鼠标点中激活链接 */
.i1{
    background: url(../images/icon_csgo.less.png);
    background-position: 67px 0;
}
.i2{
    background: url(../images/icon_csgo.less.png);
    background-position: 0 -67px;
}
.i3{
    background: url(../images/icon_csgo.less.png);
    background-position: 0 0;
}
.i4{
    background: url(../images/icon_csgo.less.png);
    background-position: 100.5px -67px;
}
.i5{
    background: url(../images/icon_csgo.less.png);
    background-position: -67px -33.5px;
}
.i6{
    background: url(../images/icon_csgo.less.png);
    background-position: 0 -33.5px;
}
.i7{
    background: url(../images/icon_csgo.less.png);
    background-position: -100.5px 0;
}
.i8{
    background: url(../images/icon_csgo.less.png);
    background-position: -33.5px 0;
}
.i9{
    background: url(../images/icon_csgo.less.png);
    background-position: 0 -100.5px;
}
.i10{
    background: url(../images/icon_csgo.less.png);
    background-position: -33.5px -33.5px;
}
.box2 {
    width: 1200px;
    margin: 10px auto;
}
.ul2s li a{
    text-decoration: none;
    padding-left: 20px;
}
.ul2s li a:link {color: rgb(226, 208, 208)} /* 未被访问的链接 蓝色 */
.ul2s li a:visited {color: #999} /* 已被访问过的链接 蓝色 */
.ul2s li a:hover {color: #e5e5e5} /* 鼠标悬浮在上的链接 蓝色 */
.ul2s li a:active {color: #fff} /* 鼠标点中激活链接 蓝色 */
.box2 div{
    float: left;
    margin-left: 30px;
    width: 100px;
    line-height: 30px;
    padding-left: 10px;
    background-color: #2D2F3E;
    color: #9a9b9e;
}
.box2div ul li{
    height: 30px;
    position: relative;
    left: -40px;
    top: 0;
    background-color: #2D2F3E;
}
.box2div ul{
    display: none;
}
.box2 .divdiv{
    width: 250px;
    float: right;
    background: none;
}
.backgrand{
    position: relative;
    z-index: -1;
    width: 100%;
    height: 300px;
    background-image: url("https://cdn.buff.163.com/static/images/site/index-section2-bg.jpg");
}